Jeremy walks into a video arcade with a pocketful of quarters. he spends them at a rate of four every quarter hour until he runs out. if the amount of of quarters jeremy has is graphed overtime, which feature of the graph corresponds to jeremy's initial amount of quarters, before he spends the first one ? answer choices : a. the y-intercept b. the slope c. the x-intercept d. the minimum value

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?